MyXls导出Excel时在Web页即时生成原生Excel文件
关于MyXls生成Excel文件，本文不赘述。本文主要介绍在Web条件下利用MyXls即时生成原生Excel的方法。
至于NPOI方法即时生成Excel方法，请参考http://blog.csdn.net/downmoon/archive/2011/04/17/6329814.aspx
需要引用dll,org.in2bits.MyXls，下载地址：http://sourceforge.net/projects/myxls/files/MyXls/
并在头部添加using org.in2bits.MyXls;
假如一个DataTable已经获取，那么方法如下：
一、生成本地文件：
/// <summary> /// 导出Excel /// </summary> public static void ExportExcelForPercent(string sheetName, string xlsname, int areaid, DateTime dt) { DataTable table = GetDataTableForPercent(areaid, dt); if (table == null || table.Rows.Count == 0) { return; } XlsDocument xls = new XlsDocument(); Worksheet sheet = xls.Workbook.Worksheets.Add(sheetName); //填充表头 foreach (DataColumn col in table.Columns) { sheet.Cells.Add(1, col.Ordinal + 1, col.ColumnName); } //填充内容 for (int i = 0; i < table.Rows.Count; i++) { for (int j = 0; j < table.Columns.Count; j++) { sheet.Cells.Add(i + 2, j + 1, table.Rows[i][j].ToString()); } } //保存 xls.FileName = xlsname; xls.Save(); xls = null; }
二、web条件下利用MemoryStream即时生成：
/// <summary> /// Myxls导出Excel /// </summary> public static void ExportExcelForPercentForWeb(string sheetName, string xlsname, int areaid, DateTime curdate) { XlsDocument xls = new XlsDocument(); Worksheet sheet = xls.Workbook.Worksheets.Add(sheetName); try { DataTable table = GetDataTableForPercent(areaid, curdate); if (table == null || table.Rows.Count == 0) { return; } //XlsDocument xls = new XlsDocument(); //Worksheet sheet = xls.Workbook.Worksheets.Add(sheetName); //填充表头 foreach (DataColumn col in table.Columns) { sheet.Cells.Add(1, col.Ordinal + 1, col.ColumnName); } //填充内容 for (int i = 0; i < table.Rows.Count; i++) { for (int j = 0; j < table.Columns.Count; j++) { sheet.Cells.Add(i + 2, j + 1, table.Rows[i][j].ToString()); } } //保存 //xls.FileName = xlsname; //xls.Save(); #region 客户端保存 using (MemoryStream ms = new MemoryStream()) { xls.Save(ms); ms.Flush(); ms.Position = 0; sheet = null; xls = null; HttpResponse response = System.Web.HttpContext.Current.Response; response.Clear(); response.Charset = "UTF-8"; response.ContentType = "application/vnd-excel";//"application/vnd.ms-excel"; System.Web.HttpContext.Current.Response.AddHeader("Content-Disposition", string.Format("attachment; filename=" + xlsname)); //System.Web.HttpContext.Current.Response.WriteFile(fi.FullName); byte[] data = ms.ToArray(); System.Web.HttpContext.Current.Response.BinaryWrite(data); } #endregion //xls = null; } catch (Exception ex) { } finally { sheet = null; xls = null; } }
三、调用方法：
private void SaveFile(int year, int month, int Areaid) { try { string fileName = string.Empty; fileName = SQLParser.RandomKey(10001, 99999) + ".xls"; string sheetname = string.Format("瞬时达网络有限公司{0}[{1}年{2}月]销售表", (Areaid == 1) ? "北方区" : "南方区", year, month); DateTime dt = new DateTime(year, month, Areaid); ExcelHelper.ExportExcelForPercentForWeb(sheetname, fileName, Areaid, dt); //Page.Response.Write("<mce:script type="text/javascript"><!-- window.close(); // --></mce:script>"); //return; } catch { } }
myXls下载地址：http://sourceforge.net/projects/myxls/files/MyXls/